Concepts & Techniques for Accessible, Closed Captioned Web-Based Video 10th Annual Accessing Higher Ground: Accessible Media, Web and Technology Conference.

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Presentation transcript:

Concepts & Techniques for Accessible, Closed Captioned Web-Based Video 10th Annual Accessing Higher Ground: Accessible Media, Web and Technology Conference Boulder, Colorado November 7, David Klein K. “Fritz” Thompson

Embedding Videos into HTML  Media Player and RealPlayer better external, not embedded  QuickTime & Flash generally better embedded  Internet Explorer generally better with Flash  Controversy in use of and tags

Conventional Embedding    Object parameters  File location    Embed parameters  File location    

Embedding QuickTime <object classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B" width="260" height="316" codebase=" <param name="src" value=" /> <embed src=" width="260" height="316" pluginspage="

Embedding Flash Video Player <object classid="clsid:d27cdb6e-ae6d-11cf-96b " codebase=" cab#version=7,0,0,0" width="340" height="440" id="video"> <param name="movie" value=" /> <embed src=" quality="high" width="340" height="440" name="video" type="application/x-shockwave-flash" base="." pluginspage=" /> </object>

Embedding Issues    Not a standard  Doesn’t validate for XHTML  tag not supported the same on all browsers  Player versioning  Downloading / upgrading versions a major pain  Frequently a showstopper for many users  Earlier required versions may show garbage (or blank space) instead of error message

Flash Embedding Alternatives  Object Only method  Validates for XHTML  Tricks browsers into correctly displaying content  Uses graceful failure rule  When one OBJECT tag doesn’t work, it’s ignored  Moves to the next OBJECT tag

OBJECT Only Method </object></object>

Flash Embedding Alternatives  Flash Object method (uses JavaScript) to determine versions and handle errors gracefully  Avoid unacceptable use of or tags  Uses alternative text as a default when all else fails   Works in Internet Explorer to avoid double click interaction

Contact  Law, Health Policy & Disability Center   LHPDC Bulletin Board (download Flash playback engine)  David Klein Boyd Law Bldg. College of Law University of Iowa Iowa City, IA K. “Fritz” Thompson Boyd Law Bldg. College of Law University of Iowa Iowa City, IA